reconnect_interval: shorthand for setting the same reconnect_interval_min/max

reconnect_urls: list of alternate urls to try when connecting

The reconnect_interval is the time that the client waits for after a failed attempt to reconnect before retrying. It starts at the value of the min_retry_interval and is doubled every failure until the value of max_retry_interval is reached.

Values in seconds can be fractional, for example 0.001 is a millisecond delay.